<!--
 * @Author: jswang
 * @Date: 2021-07-11 13:43:24
 * @LastEditTime: 2021-07-14 11:13:22
-->
<template>
  <div>
    <!-- 面包屑导航区 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图区域 -->
    <el-card class="box-card">
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input
            placeholder="请输入内容"
            v-model="queryInfo.query"
            clearable
            @clear="getUserList"
          >
            <el-button
              slot="append"
              icon="el-icon-search"
              @click="getUserList()"
            ></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="dialogVisible = true"
            >添加用户</el-button
          >
        </el-col>
      </el-row>
      <!-- stripe 隔行换色-->
      <!-- 表格 -->
      <el-table :data="userlist" border stripe>
        <el-table-column type="index" label="#"> </el-table-column>
        <el-table-column prop="username" label="姓名" width="width">
        </el-table-column>
        <el-table-column prop="email" label="邮箱" width="width">
        </el-table-column>
        <el-table-column prop="mobile" label="电话" width="width">
        </el-table-column>
        <el-table-column prop="role_name" label="角色" width="width">
        </el-table-column>
        <el-table-column prop="mg_state" label="状态">
          <!-- 作用域插槽,slot-scope ="scope " scope.row 可以拿到这一行所有数据 -->
          <template slot-scope="scope">
            <el-switch
              v-model="scope.row.mg_state"
              @change="userStateChanged(scope.row)"
            ></el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="width">
          <!-- 作用域插槽  -->
          <template slot-scope="scope">
            {{ scope.row.status }}
            <!-- 修改按钮 -->
            <el-button
              type="primary"
              icon="el-icon-edit"
              size="mini"
              @click="showEditDialog(scope.row.id)"
            ></el-button>
            <!-- 删除 -->
            <el-button
              type="danger"
              icon="el-icon-delete"
              size="mini"
              @click="removeUserById(scope.row.id)"
            ></el-button>
            <!-- 分配角色按钮 -->
            <el-tooltip
              class="item"
              effect="dark"
              content="分配角色"
              placement="top"
              :enterable="false"
            >
              <el-button
                type="warning"
                icon="el-icon-setting"
                size="mini"
                @click="setRole(scope.row)"
              ></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>
      <!-- 分页工具条 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1, 2, 5, 10]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      >
      </el-pagination>
      <!-- 添加用户的对话框 -->
      <el-dialog
        title="添加用户"
        :visible.sync="dialogVisible"
        width="50%"
        @close="addDialogClosed"
      >
        <!-- 内容主题区域 -->
        <el-form
          ref="addFormRef"
          label-width="70px"
          :model="addForm"
          :rules="addFormRules"
        >
          <el-form-item label="用户名" prop="username">
            <el-input v-model="addForm.username"></el-input>
          </el-form-item>
          <el-form-item label="密码" prop="password">
            <el-input v-model="addForm.password"></el-input>
          </el-form-item>
          <el-form-item label="邮箱" prop="email">
            <el-input v-model="addForm.email"></el-input>
          </el-form-item>
          <el-form-item label="手机" prop="mobile">
            <el-input v-model="addForm.mobile"></el-input>
          </el-form-item>
        </el-form>
        <!-- 底部按钮区域 -->
        <span slot="footer" class="dialog-footer">
          <el-button @click="dialogVisible = false">取 消</el-button>
          <el-button type="primary" @click="addUser">确 定</el-button>
        </span>
      </el-dialog>

      <!-- 修改用户对话框 -->
      <el-dialog
        title="修改用户"
        :visible.sync="editDialogVisible"
        width="50%"
        @close="editDialogClosed"
      >
        <!-- 内容主体区域 -->
        <el-form
          ref="editFormRef"
          :model="editForm"
          :rules="editFormRules"
          label-width="70px"
        >
          <el-form-item label="用户名">
            <el-input v-model="editForm.username" disabled></el-input>
          </el-form-item>
          <el-form-item label="邮箱" prop="email">
            <el-input v-model="editForm.email"></el-input>
          </el-form-item>
          <el-form-item label="手机" prop="mobile">
            <el-input v-model="editForm.mobile"></el-input>
          </el-form-item>
        </el-form>
        <!-- 底部按钮区域 -->
        <span slot="footer" class="dialog-footer">
          <el-button @click="editDialogVisible = false">取 消</el-button>
          <el-button type="primary" @click="editUserInfo">确 定</el-button>
        </span>
      </el-dialog>
      <!-- 分配角色对话框 -->
      <el-dialog
        title="分配角色"
        :visible.sync="setRoleDialogVisible"
        width="50%"
        @close = "setRoleDialogClosed"
      >
        <!-- 内容主体 -->
        <div>
          <p>当前用户:{{ userInfo.username }}</p>
          <p>当前角色:{{ userInfo.role_name }}</p>
          <p>
            分配新角色:
            <el-select v-model="selectedRoleId" placeholder="请选择">
              <el-option
                v-for="item in roleList"
                :key="item.id"
                :label="item.roleName"
                :value="item.id">
              </el-option>
            </el-select>
          </p>
        </div>
        <span slot="footer" class="dialog-footer">
          <el-button @click="setRoleDialogVisible = false">取 消</el-button>
          <el-button type="primary" @click="saveRoleInfo"
            >确 定</el-button
          >
        </span>
      </el-dialog>
    </el-card>
  </div>
</template>

<script>
export default {
  // 在实例创建完成后被立即调用 created 钩子函数
  created() {
    this.getUserList()
  },
  data() {
    //验证邮箱的自定义规则
    var checkEmail = (rule, value, callback) => {
      //验证邮箱的正则
      const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
      if (regEmail.test(value)) {
        //合法邮箱
        return callback()
      }
      callback(new Error('请输入合法邮箱'))
    }
    //校验手机号的自定义规则
    var checkMobile = (rule, value, callback) => {
      // 验证手机号的正则表达式
      const regMobile = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
      if (regMobile.test(value)) {
        //合法
        return callback()
      }
      //不合法
      callback(new Error('请输入合法手机号码'))
    }
    return {
      //获取用户列表的参数对象
      queryInfo: {
        query: '',
        // 当前页数
        pagenum: 1,
        // 当前每页显示多少条数据
        pagesize: 2
      },
      userlist: [],
      // 总共多少数据
      total: 0,
      //控制添加用户对话框的显示与隐藏
      dialogVisible: false,
      //控制修改用户对话框的显示与隐藏
      editDialogVisible: false,
      //添加用户的表单数据
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      //查询到的用户信息对象
      editForm: {},
      //添加表单的验证规则对象
      addFormRules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          {
            min: 3,
            max: 20,
            message: '长度在 3 到 20 个字符之间',
            trigger: 'blur'
          }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          {
            min: 6,
            max: 16,
            message: '长度在 6 到 16 个字符之间',
            trigger: 'blur'
          }
        ],
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入电话号码', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      },
      //修改表单的验证规则对象
      editFormRules: {
        emila: [
          { required: true, message: '请输入用户邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入用户手机号码', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      },
      //控制分配角色对话框的显示与隐藏
      setRoleDialogVisible: false,
      //需要被分配角色的用户信息
      userInfo: {},
      //所有角色的数据列表
      roleList: [],
      //已经选中的role Id
      selectedRoleId:'',
    }
  },
  methods: {
    // 获取用户列表
    async getUserList() {
      const { data: res } = await this.$http.get('users', {
        params: this.queryInfo
      })
      if (res.meta.status !== 200)
        return $this.$message.error('获取用户列表失败!')
      //获取用户列表成功
      this.userlist = res.data.users
      this.total = res.data.total
    },
    //监听pagesize改变的事件
    handleSizeChange(newSize) {
      //改变每页显示的条数
      this.queryInfo.pagesize = newSize
      //重新获取数据
      this.getUserList()
    },
    //监听页码值改变事件
    handleCurrentChange(newPage) {
      this.queryInfo.pagenum = newPage
      this.getUserList()
    },
    //监听 switch 开关状态
    async userStateChanged(userinfo) {
      //返回的是一个promise 对象,为了简化操作, 加一个  async  await
      const { data: res } = await this.$http.put(
        `users/${userinfo.id}/state/${userinfo.mg_state}`
      )
      if (res.meta.status !== 200) {
        userinfo.mg_state = !userinfo.mg_state
        return $this.$message.error('更新用户状态失败!')
      }
      this.$message.success('更新用户状态成功!')
    },
    //监听添加用户对话框的关闭事件
    addDialogClosed() {
      this.$refs.addFormRef.resetFields()
    },
    //点击按钮添加新用户
    addUser() {
      //校验表单数据
      this.$refs.addFormRef.validate(async valid => {
        //都验证通过这里会返回true,否则就是false
        // console.log(valid);
        if (!valid) return
        //验证通过,可以发起添加用户网络请求
        const { data: res } = await this.$http.post('users', this.addForm)
        //判断是否添加成功
        if (res.meta.status !== 201) {
          return this.$message.error('添加用户失败!')
        }
        this.$message.success('添加用户成功!')
        //隐藏添加用户的对话框
        this.dialogVisible = false
        //重新获取用户列表
        this.getUserList()
      })
    },
    //展示编辑用户的对话框
    async showEditDialog(id) {
      //根据id 查询用户信息
      const { data: res } = await this.$http.get('users/' + id)
      //失败
      if (res.meta.status !== 200) {
        return this.$message.error('查询用户信息失败!')
      }
      //成功
      //将数据保存起来
      this.editForm = res.data
      //单击编辑按钮,显示修改对话框
      this.editDialogVisible = true
    },
    //监听修改用户对话框的关闭事件
    editDialogClosed() {
      //重置表单
      this.$refs.editFormRef.resetFields()
    },
    //修改用户信息并提交
    editUserInfo() {
      //进行表单预校验,校验成功后发起修改用户网络请求
      //通过 表单的引用对象上的 validate(valid=>{拿到校验后的结构}) boolean 值
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) return
        //发起修改用户信息网络请求
        const { data: res } = await this.$http.put(
          'users/' + this.editForm.id,
          {
            email: this.editForm.email,
            mobile: this.editForm.mobile
          }
        )
        if (res.meta.status !== 200) {
          return this.$message.error('更新用户失败!')
        }
        //关闭对话框
        this.editDialogVisible = false
        //刷新数据列表
        this.getUserList()
        //提示修改成功
        this.$message.success('更新用户成功!')
      })
    },
    //根据id删除对应的用户信息
    async removeUserById(id) {
      //弹框,询问用户是否删除
      //返回的是一个promise 对象  可以用 asycn await 来修饰,简化操作
      const confirmResult = await this.$confirm(
        '此操作将永久删除该用户, 是否继续?',
        '提示',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }
      ).catch(error => error) //捕获错误,只有一个参数可以取消小括号,花括号,return,会自动返回
      //如果用户确认删除,返回值为字符串 confirm
      //如果用户取消删除,则返回字符串 cancle
      // console.log(confirmResult);
      if (confirmResult !== 'confirm') {
        return this.$message.info('已取消删除')
      }
      //发起删除用户网络请求
      const { data: res } = await this.$http.delete('users/' + id)
      if (res.meta.status !== 200) {
        return this.$message.error('删除用户失败')
      }
      this.$message.success('删除用户成功')
      this.getUserList()
    },
    //展示分配角色对话框
    async setRole(userInfo) {
      this.userInfo = userInfo
      //展示对话框之前,获取所有角色列表
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200) {
        return this.$message.error('获取角色列表失败')
      }
      this.roleList = res.data
      this.setRoleDialogVisible = true
    },
    //保存分配的角色
    async saveRoleInfo(){
      if(!this.selectedRoleId){
        return this.$message.error("请选择要分配的角色!")
      }
      const {data:res} = await this.$http.put(`users/${this.userInfo.id}/role`,{rid:this.selectedRoleId})
      if(res.meta.status !== 200){
        return this.$message.error("更新角色失败")
      }
      this.$message.success("更新角色成功")
      this.getUserList()
      this.setRoleDialogVisible = false
    },
    //监听分配角色对话框事件
    setRoleDialogClosed(){
      //将已经选中角色id 置空
      this.selectedRoleId = ''
      //将用户信息置空
      this.userInfo = {}
    }
  }
}
</script>
<style lang="less" scoped></style>
